Table 2 Comparison of the clinical characteristics of patients with pulmonary TB.
Variable |  | Grade 1 (n = 37, %) | Grade 2 (n = 46, %) | Grade 3 (n = 55, %) | Grade 4 (n = 56, %) | Grade 5 (n = 55, %) | χ2/Z | P |
|---|---|---|---|---|---|---|---|---|
Sex | Male | 23 (62.16) | 33 (71.34) | 43 (78.18) | 48 (85.71) | 47 (85.45) | 8.980 | 0.003 |
Female | 14 (37.84) | 13 (28.66) | 12 (21.82) | 8 (14.29) | 8 (14.55) | |||
Age, years | 60–69 | 30 (81.08) | 43 (93.48) | 41 (74.54) | 43 (76.79) | 29 (52.73) | 19.431 | < 0.001 |
70–79 | 7 (18.92) | 3 (6.52) | 12 (21.82) | 11 (19.64) | 19 (34.54) | |||
80–90 | 0 (0.00) | 0 (0.00) | 2 (3.64) | 2 (3.57) | 7 (12.73) | |||
Smoking | Yes | 17 (45.95) | 21 (45.65) | 31 (56.36) | 35 (62.50) | 25 (45.45) | 0.267 | 0.606 |
No | 20 (54.05) | 25 (54.35) | 24 (43.64) | 21 (37.50) | 30 (54.55) | |||
Alcohol use | Yes | 9 (24.32) | 10 (21.74) | 18 (32.73) | 21 (37.50) | 15 (27.27) | 0.882 | 0.348 |
No | 28 (75.68) | 36 (78.26) | 37 (67.27) | 35 (62.50) | 40 (72.73) | |||
Marital status | Unmarried | 1 (2.70) | 2 (4.35) | 1 (1.82) | 0 (0.00) | 1 (1.82) | 6.744 | 0.034 |
Married | 32 (86.49) | 42 (91.30) | 47 (85.45) | 51 (91.07) | 40 (72.73) | |||
Divorced or widowed | 4 (10.81) | 2 (4.35) | 7 (12.73) | 5 (8.93) | 14 (25.45) | |||
District | Rural | 23 (62.16) | 34 (73.91) | 40 (72.73) | 36 (64.29) | 45 (81.82) | 1.770 | 0.183 |
County | 14 (37.84) | 12 (26.09) | 15 (27.27) | 20 (35.71) | 10 (18.18) | |||
BMI (kg/m2) | < 18.5 | 6 (16.22) | 6 (13.04) | 10 (18.18) | 17 (30.36) | 29 (52.73) | 23.507 | < 0.001 |
18.5–24 | 26 (70.27) | 29 (63.04) | 35 (63.63) | 33 (58.93) | 22 (40.00) | |||
24–28 | 4 (10.81) | 9 (19.57) | 8 (14.55) | 5 (8.93) | 4 (7.27) | |||
≥ 28 | 1 (2.70) | 2 (4.35) | 2 (3.64) | 1 (1.78) | 0 (0.00) | |||
Disease duration (years) | < 1 | 33 (89.19) | 36 (78.26) | 41 (74.55) | 38 (67.86) | 25 (45.45) | 21.871 | < 0.001 |
1–3 | 0 (0.00) | 6 (13.04) | 3 (5.45) | 6 (10.71) | 11 (20.00) | |||
≥ 3 | 4 (10.81) | 4 (8.70) | 11 (20.00) | 12 (21.43) | 19 (34.55) | |||
Respiratory diseasea | Yes | 9 (24.32) | 17 (36.96) | 27 (49.09) | 27 (48.21) | 36 (65.45) | 15.499 | < 0.001 |
No | 28 (75.68) | 29 (63.04) | 28 (50.91) | 29 (51.79) | 19 (34.55) | |||
Cardiovascular diseaseb | Yes | 3 (8.11) | 1 (2.17) | 5 (9.09) | 4 (7.14) | 14 (25.45) | 9.602 | 0.002 |
No | 34 (91.89) | 45 (97.83) | 50 (90.91) | 52 (92.86) | 41 (74.55) | |||
Hypertension | Yes | 7 (18.92) | 10 (21.74) | 8 (14.55) | 13 (23.21) | 11 (20.00) | 0.059 | 0.808 |
No | 30 (81.08) | 36 (78.26) | 47 (85.45) | 43 (76.79) | 44 (80.00) | |||
Diabetes mellitus | Yes | 12 (32.43) | 10 (21.74) | 13 (23.64) | 13 (23.21) | 9 (16.36) | 2.159 | 0.142 |
No | 25 (67.57) | 36 (78.26) | 42 (76.36) | 43 (76.79) | 46 (83.64) | |||
Cavitary lung lesions | Yes | 9 (24.32) | 10 (21.74) | 11 (20.00) | 15 (26.79) | 17 (30.91) | 1.162 | 0.281 |
No | 28 (75.68) | 36 (78.26) | 44 (80.00) | 41 (73.21) | 38 (69.09) | |||
Lesions ≥ 3 | Yes | 18 (48.65) | 30 (65.22) | 50 (90.91) | 53 (94.64) | 52 (94.55) | 39.150 | < 0.001 |
No | 19 (51.35) | 16 (34.78) | 5 (9.09) | 3 (5.36) | 3 (5.45) | |||
AFB smear | (-) | 23 (62.16) | 20 (43.48) | 28 (50.91) | 32 (57.14) | 27 (49.09) | 0.097 | 0.755 |
(+) | 14 (37.84) | 26 (56.52) | 27 (49.09) | 24 (42.86) | 28 (50.91) | |||
Albumin (g/L) | 38.11 ± 4.38 | 35.87 ± 4.31 | 34.00 ± 4.85 | 34.22 ± 4.48 | 32.47 ± 4.57 | 9.785 | < 0.001 | |
Hemoglobin (g/L) | 131.95 ± 15.49 | 128.41 ± 14.47 | 125.04 ± 16.16 | 124.13 ± 16.75 | 121.29 ± 20.93 | 9.785 | < 0.001 | |
Platelet (109/L) | 237.97 ± 91.55 | 236.24 ± 90.24 | 236.78 ± 95.29 | 247.38 ± 101.35 | 235.677 ± 84.23 | 0.150 | 0.963 | |